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A156386 Number of 5X5 arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to n. 0
1, 6, 12, 12, 13, 7, 32, 0, 18, 68, 32, 48, 12, 12, 36, 0, 19, 76, 112, 76, 75, 20, 40, 0, 64, 112, 88, 204, 0, 38, 76, 0, 30, 184, 168, 116, 275, 18, 80, 0, 114, 194, 96, 204, 48, 99, 136, 0, 12, 210, 272, 452, 190, 86, 472, 0, 156, 256, 128, 400, 0, 126, 152, 0, 19, 316 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..65.

EXAMPLE

All solutions for n=1

...0.0.0.0.1...0.0.0.0.1...0.0.0.1.0...0.1.0.0.0...1.0.0.0.0...1.0.0.0.0

...0.0.0.1.0...0.1.0.0.0...0.0.0.0.1...1.0.0.0.0...0.0.0.1.0...0.1.0.0.0

...0.0.1.0.0...0.0.1.0.0...0.0.1.0.0...0.0.1.0.0...0.0.1.0.0...0.0.1.0.0

...0.1.0.0.0...0.0.0.1.0...1.0.0.0.0...0.0.0.0.1...0.1.0.0.0...0.0.0.1.0

...1.0.0.0.0...1.0.0.0.0...0.1.0.0.0...0.0.0.1.0...0.0.0.0.1...0.0.0.0.1

CROSSREFS

Sequence in context: A135462 A315572 A218289 * A315573 A315574 A286273

Adjacent sequences:  A156383 A156384 A156385 * A156387 A156388 A156389

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 09 2009

STATUS

approved

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Last modified November 27 18:22 EST 2020. Contains 338683 sequences. (Running on oeis4.)